[Dovecot] Sieve management without shell access or homedir

Hi.

Is there some user friendly application (web based, maybe a webmail addon) that can help a user manage their sieve filtering? My mail users don't have any shell access to the mail host. Most users won't have a regular home directory either. Can I store this sieve information someplace else? Either directly in LDAP, or in some database, or a common directory for all user's sieve files?

/Tobias